Aren't some of those keg beers? You won't find many of those nowadays. Best resource for beer is
CAMRA. I'm not a fan of bitters, the best thing about English ale is the names: Fiddler's Elbow, Old Speckled Hen, Dogfish Head Snowblower Ale, Sick Duck, Homo Erectus, Seriously Bad Elf, Arrogant Bastard, Moose Drool, Santa's Butt Porter, Merriman's Old Fart, etc. (I'm quoting these because you're English and will appreciate them, but you probably
have to be English to find them funny). I prefer light beers and lagers; Sol, Corona, Stella Artois, Rolling Rock, Heineken Export, etc. I also love Old Style, but I think you can only get it in Chicago.
If you love beer, Prague is the place to go. Absolutely dozens of spot-on beers of all styles (better than Munich). Last time I was there, you could buy a litre for 20p (about 30 cents), but I believe prices have gone up slightly since then.